Heebeet cotteell



(No Model.)

H. GOTTRELL.

Vapor and'ot herflngines. No. 230,921. Patented Aug. 10,1880.

N.PETEhS. FHOTO-LITNOGRAPHER.'WASHINGTON. D c.

UNrrnn Snares PATENT @rricn.

HERBERT OOTTRELL, OF NEWARK, NEW JERSEY.

VAPOR AND OTHER ENGINES.

SPECIFICATION forming part of Letters Patent No. 230,921, dated August 10, 1880.

Application filed March 27, 1880.

To all whom it may concern Be it known that I, HERBERT OoTrRELL, of the city of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Vapor and other Engines, of which the following is a specification.

While my invention is particularlyintended to be embodied in engines in which the vapor of a hydrocarbon liquid is employed as a motive agent, certain features thereof are applicable to other kinds of engines.

Another feature consists in the combination, with an engine-cylinder, of a valve-chest secured upon the under side thereof, a pipe for the introduction of hydrocarbon or other liquid into said chest, and means external to the chest for heating the same, so as to vaporize the hydrocarbon or other liquid,whereby the valvechestitselfconstitutes the vaporizi n g-chamber.

When the valve-chest constitutes the vaporizing-chamber, as aforesaid, the said chest is preferably made separate from the cylinder and constructed with the induction and eduction ports leading to the cylinder within it,

and having the valve-seat upon its upper inner surface. In such case I also combine with the cylinder a condensing-chamber,into which the vapor is exhausted from the cylinder, and against which the end of the valve-chest is secured, so as to exhaust directly from the valve exhaust-port of the chest to the said chamber.

Another feature of my invention consists in a novel mechanism for imparting a rocking 3 5 motion from a longitudinally-reciprocating rod to a rock-sh aft, applicable for operating valves and other purposes.

Other features consist in details of construction and in combinations of parts, to be hereiuafter described.

In the accompanying drawings, Figurelrepresents a longitudinal section through a portion of an engine embodying my invention, and Fig. 2 represents a transverse section upon the 4 5 dotted line 9. 00, Fig. 1. 4

Similar letters of reference designate corresponding parts in both figures.

A designates a horizontal]y-arrangcd engine-cylinder. B designates a piston adapted (No model.)

other construction.

0 designates the valve-chest, bolted to the under side of the cylinder, and having the illduction-ports a a and the exhaust-port 7) cored 5 5 in it.

D designates an ordinary slide-valve arranged in the chest 0 and adapted to be re ciprocated by any suitable means.

The arrangement and construction of the steam-chest O and slide-valve D difi'er from the ordinary arrangement and construction in that the valve works upon a valve-scat, 0, formed upon the inner surface of the outer wall of the valve-chest, instead of upon a valve-seat formed upon the side of the cylinder.

The valve D being reciprocated admits the motive agent employed from the chest through the induction ports a a, and thence to each end of the cylinder A. The construction of the induction and exhaust ports in the valvechest instead of the cylinder and the arrangement of the valve to work'upon the inner surface of the outer wall of the chest as a valves'eat are very advantageous for various reasons. 7 5

In the castin g of large cylinders the arrangement of the cores for the ports is a somewhat difficult operation, and such castings often prove defective, rendering them useless and necessitatingthemakingofnewcastings. For this reason'it is much more desirable to core the ports in the chest, because a casting thereof can be readily and cheaply replaced. Such construction is also desirable, because when the valve-seat 0 requires to be planed off and refaced it is only necessary to remove the chest, obviating the necessity of removing the cylinder and avoiding the expensejof resetting the cylinder and lining up the engine.

E designates a pipe through which the steam 0 or other motive agent is introduced into the valve-chest. Where a hydrocarbon or other liquid is vaporized to serve as a motive agent, the said'liquid is introduced through said supply-pipe in quantities as is required, either in 5 a continuous fine stream or intermittently, as may be most desirable. The pipe E enters the cylinder immediately above the joint between the cylinder and valve-chest, and hence it is not necessary to disconnect said pipe when it is desired to remove the said chest.

When hydrocarbon liquid is employed as a motive agent the valve-chest constitutes the vaporizing-chamber, and means external to the chest are employed to heat the same and vaporize the hydrocarbon liquid. As here represented, I employ for this purpose two Bunsen gas-burners, F, arranged at a proper distance below the valve-chest and imparting the desired degree of heat thereto.

Many advantages arise from making the valve-chest the vaporizing-chamber, as the engine is thereby simplified and the vapor does not lose heat in passing from the vaporizingchamber to the cylinder, as would be the case were a separate vaporizing-chamber employed.

The cylinder and valve-ch est are here shown as supported by being bolted at the end to an air-tight chamber, G, with which the exhaustport I) communicates, 'so that the vapor after being used in the engine is exhausted into this chamber and there allowed to condense. The hydrocarbon liquid which collects in the condensing-chamber G, resulting from the conden sation of the exhaust-vapor, may be reused in the engine, or be used for other purposes.

As the valve-chest G is bolted at the end to the side of the condensing-chamber G, additional joints are dispensed with, there being but one joint between the valve-seat and the chamber, thereby preventing leakage.

I will now describe themeans employed for actuatingthe valveD, premisin g, however, that certain parts thereof might be employed for operating a rock-shaft for any purpose.

, The piston-rod B passes through the condensing-chamberG and through stuffing-boxes cl in the walls thereof.

H designates a rock-shaft entering the condensing-chamber at a right angle to the pistonrod, and also passing through a stuffing-box, e, in the wall of the chamber. The mechanism shown for oscillating or rocking this rockshaft consists of a pair of curved arms, I 1, extending from the rock-shaft and embracing or extending upon each side of a disk, J, fixed upon the piston-rod B, so that the longitudinal reciprocation of the said rod causes said disk to act upon one of the said arms and turn the rock-shaft H.

The surfaces of the disk J are so curved or rounded that it is of oblate spheroidal or lenslike shape, and the inner surfaces of the arms I l, which bear upon the disk, are so curved that there is no lost motion at the end of the stroke.

The drawings represent the piston as having completed its stroke to the left, and it will be observed that the point of the arm I just touches the disk so that at the change of the stroke it is acted upon immediately by the disk. This feature will also be clearly observed in the dotted outline representing the piston at the other end of the stroke, in

which case the point of the arm I is in close proximity to the disk J and will be actuated immediately on the return stroke of the piston.

The mechanism for operating the valve D from the rock-shaft H, as here represented, consists of a rock-shaft, f, projecting through the side of the chest 0, having at its inner end a toe, g, engaging with a hole in the valve, and having at its outer end an arm or lever, h.

The rock-shaft H is provided with a lever or arm, K, and L designates a connecting-rod, connecting the lever or arm K and the lever or arm h and actuating the latter from the former.

It will be seen that by my invention I provide an engine the several parts of which are readily accessible for repairs or renewal, and one very simple in its construction, and that I also provide a very simple and desirable mechanism for operating a rock-shaft for imparting motion to a valve or other article.

The engine thus constructed is very desirable for various uses, and is particularly intended for operating an air-pump for forcing air through hydrocarbon liquid to convert it into hydrocarbonated vapor for use as illu' minating-gas.

What I claim as my invention, and desire to secure by Letters Patent, is

Y 1. The combination, with an engine-cylim der, of a valve-chest secured upon the under side thereof, a pipe for the introduction of hydrocarbon or other liquid into said chest, and means external to the chest for heating the same, so as to vaporize the said liquid therein, substantially as and for the purpose specified.

2. The combination, with an engine-cylin der, of a valve-chest made separate from the cylinder, having constructed within it the induction and eduction ports leading to the cylinder, having the valve-seat on its upper inner surface, and being secured upon the under side of the cylinder, aslide-valve arranged in said chest and working only upon said seat, a pipe for introducing hydrocarbon or other liquid into the chest, and means external to the chest for heating the same and raising it to such a temperature that upon the introduction of liquid the liquid will be vaporized by contact with the heated chest, substantially as specified.

3. The combination, with an engine-cylinder and a condensing-chamber arranged at the end thereof, of a valve-chest secured to the under side of said cylinder, containing the induction and exhaust ports, and bolted at the end to said condensing-chamber, apipe for i11- troducing hydrocarbon or other liquid into said chest, and means external to said chest for heating the same to vaporize said liquid, substantially as specified.

4. The combination, with the piston-rod B and the rock-shaft H, of the oblate spheroidal or lens-like disk J, fixed upon said rod, and the curved arms I I, secured upon said rockshaft and embracing said disk, substantially as and for the purpose specified.

5. The combination, with the cylinder, piston, and piston-rod, of the valve-chest O, the valve D, the induction-pipe E, entering said cylinder above the valve-chest, and the burners F, all arranged substantially as and for the purpose specified.

HERBERT GOTTRELL. Witnesses:

FREDK. HAYNES, A. 0. WEBB. 

